World Bank
offers multiple databases online, some free of charge and some on an annual
subscription basis.

Data
Query offers free access to a 5-year, 54-indicators segment of the
World Development Indicators (WDI) database.

WDI
Online: You can subscribe to World Development Indicators Online and
have direct access to more than 550 development indicators, with time
series for 207 countries and 18 country groups from 1960 to 2000, where
data are available.

GDF
Online: You can subscribe to Global Development Finance Online and
get access to statistical data for the 136 countries that report public
and publicly-guaranteed debt to the World Bank Debtor Reporting System.
These data run from 1970 to 2000, where available.